-or

/ə/
suffix

Meaning

Creates an agent noun, often from a verb, indicating a person or object (often machines or parts of them) that do the verb or part of speech with which they are formed.
Creates an agent noun, often from a verb, indicating a person or object (often machines or parts of them) that do the verb or part of speech with which they are formed.
Used to form nouns of quality, state, or condition.
Appended to the names of members of classes of components, especially those that have an extensive property name of the same root suffixed with -ance

Examples

settle + -or → settlor
survive + -or → survivor
Resistors possess resistance and inductors possess inductance.
err + -or → error

Word Forms

-ors -our

Etymology

Etymology tree
Proto-Indo-European *-tōr
Proto-Italic *-tōr
Latin -tor
Latin -ātor
Old French -eorbor.
Middle English -our
▲
Latin -torlbor.
English -or
From Middle English -our, from Old French -eor, from Latin -ātor; reinforced by Old French -or and its source, Latin -tor, -tōrem.

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